1388753334 has 24 divisors (see below), whose sum is σ = 3112724160. Its totient is φ = 446954928.

The previous prime is 1388753299. The next prime is 1388753351. The reversal of 1388753334 is 4333578831.

1388753334 is a `hidden beast` number, since 1 + 3 + 8 + 87 + 533 + 34 = 666.

It is a super-2 number, since 2×1388753334² = 3857271645392231112, which contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1388753334.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1329702 + ... + 1330745.

It is an arithmetic number, because the mean of its divisors is an integer number (129696840).

Almost surely, 2^1388753334 is an apocalyptic number.

1388753334 is an abundant number, since it is smaller than the sum of its proper divisors (1723970826).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1388753334 is a wasteful number, since it uses less digits than its factorization.

1388753334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2660484 (or 2660481 counting only the distinct ones).

The product of its digits is 725760, while the sum is 45.

The square root of 1388753334 is about 37265.9809209418. The cubic root of 1388753334 is about 1115.6852843257.

The spelling of 1388753334 in words is "one billion, three hundred eighty-eight million, seven hundred fifty-three thousand, three hundred thirty-four".